I used the updater.phar script. I upgraded to the next release, went to the admin tab to make sure all the checks were passing. If any weren’t (like if I needed to modify the database in some way), I’d then move on to the next release. Be sure to do proper backups in between each release, you upgrade to in case something goes sideways. I had my instance in a FreeBSD jail so I just did zfs snapshots and did a rollback if necessary (which was never since it was seamless for me)
One additional question:
I reached 16.0.5 and I could read on this website “Latest stable version: 17.0.0” but my updater.phar says “No update available.”?
Do I have to wait a some days until the new stable version is viewed by the updater?
I updated now to 17.0.0 … but now I realized: No more files!
Do I have to start at the beginning now?
My data folder is in the structure of the cloud and not outside. Maybe that’s the reason? I copied it exactly the same way like config.php.